In April last year, the 41-year-old took to Twitter to claim her life was at risk after receiving unspecified threats.

“WARNING: I am not going to commit suicide, I am not going to take too much cocaine and drown in a bath, or shoot myself. So if this happens, IT WASN’T ME. Save this tweet,” she wrote in Spanish, according to the Buenos Aires Times.

The alarming tweet was published after Ms Jaitt accused a number of well-known public figures — including politicians, journalists, entertainers and sports stars from several big-name clubs — of being involved in underage prostitution earlier that year on live TV.

She is also believed to have implicated a close friend of Pope Francis in the alleged paedophile ring.

According to the Buenos Aires Times, there are now “unconfirmed reports” the mother-of-two consumed “excessive amounts of cocaine, LSD and champagne” on Friday — the night she attended the event with a friend.

The socialite’s brother and lawyer claim her death could be murder. Picture: Instagram @natjaittSource:Instagram

Ms Jaitt, who appeared in the sixth season of Big Brother Spain in 2004 and who also featured in Playboy magazine, had attended the party with her friend Raul Duarte, 49.

The pair had planned to meet property owner Guillermo Riconi, 47, in relation to a possible business deal.

But while local news outlets have reported autopsy results showed Ms Jaitt suffered multiple organ failure with no sign of violence, her brother claims she wouldn’t have taken drugs as they would have reacted to medication she had just started taking.

The 41-year-old had already cheated death once before. Picture: Instagram @natjaittSource:Instagram

He and Ms Jaitt’s lawyer are convinced the death was likely murder and not an overdose, and police are now investigating the case and interviewing other people who were at the party with the actress.

Ms Jaitt, who rose to fame after leaving Argentina for Spain with just $10 to her name, survived a violent mugging that led to her being stabbed in the neck by a teenage criminal in 2016.

And in recent months, she also claimed to have been raped as well as receiving threats on her life.

Conspiracy theories relating to her mysterious death have run wild on social media, with scores of Reddit users arguing Ms Jaitt’s ominous April 2018 tweet was likely “proof” she hadn’t overdosed.

“She knew the risk she was putting herself at. I’m not a big conspiracy person but … are we really expected to believe that she uncovered this and then just mysteriously killed herself?” one Reddit user asked, while another added: “It must be hard to have info about something so serious yet so sensitive that people might not believe you and if they do you might be killed for it. The world seems like it’s just getting darker and darker.”

Reddit users also claimed pictures of Ms Jaitt’s naked body had been posted online shortly after her death before being hastily deleted.